Can my power supply support 2 way gtx 970 SLI?

mzzxx

Honorable
Oct 6, 2013
27
0
10,540
This Christmas I'm thinking about upgrading my pc a bit by putting in another 970. I assume this will help me game in 1440p with atleast 60 fps with maxed settings for the majority of titles released for the next few years. However, my PSU is a seasonic bronze rated 620w PSU. I have one MSI gtx 970 at standard clock rate and the processor is an i5-4690k unoverclocked. Is SLI a good idea for increasing my PC performance? Can my power supply support another card? Any tips and comments are appreciated. Thanks!